51601055 has 36 divisors (see below), whose sum is σ = 72729720. Its totient is φ = 35022240.

The previous prime is 51601021. The next prime is 51601057. The reversal of 51601055 is 55010615.

It is not a de Polignac number, because 51601055 - 2¹⁴ = 51584671 is a prime.

It is a super-2 number, since 2×51601055² = 5325337754226050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51601055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51601057) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 770132 + ... + 770198.

It is an arithmetic number, because the mean of its divisors is an integer number (2020270).

Almost surely, 2^51601055 is an apocalyptic number.

51601055 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51601055 is a deficient number, since it is larger than the sum of its proper divisors (21128665).

51601055 is a wasteful number, since it uses less digits than its factorization.

51601055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 51601055 is about 7183.3874321242. The cubic root of 51601055 is about 372.2941342541.

It can be divided in two parts, 51 and 601055, that added together give a palindrome (601106).

The spelling of 51601055 in words is "fifty-one million, six hundred one thousand, fifty-five".